PCOR: A Joint Power Control and Routing Scheme for Rechargeable Sensor Networks

We propose PCOR, a power control and routing scheme for rechargeable wireless sensor networks (WSNs) that are characterized by spatial and temporal variations of energy resources. The proposed scheme is applied to asynchronous WSNs where overhearing plays a dominant role in the energy consumption. PCOR performs quality aware route selection while reducing the energy consumption in sensor nodes that have low remaining battery life through cooperative and network-wide adaptations of transmit power levels and parent selection. Performance evaluations are presented from extensive simulation studies as well as from an experimental testbed.